--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/platform/java/jni/pdfpage.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,361 @@
+// Copyright (C) 2004-2025 Artifex Software, Inc.
+//
+// This file is part of MuPDF.
+//
+// MuPDF is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
+//
+// Alternative licensing terms are available from the licensor.
+// For commercial licensing, see <https://www.artifex.com/> or contact
+// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
+// CA 94129, USA, for further information.
+
+/* PDFPage interface */
+
+JNIEXPORT jobject JNICALL
+FUN(PDFPage_createAnnotation)(JNIEnv *env, jobject self, jint type)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	pdf_annot *annot = NULL;
+
+	if (!ctx || !page) return NULL;
+
+	fz_try(ctx)
+		annot = pdf_create_annot(ctx, page, type);
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	return to_PDFAnnotation_safe_own(ctx, env, annot);
+}
+
+JNIEXPORT void JNICALL
+FUN(PDFPage_deleteAnnotation)(JNIEnv *env, jobject self, jobject jannot)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	pdf_annot *annot = from_PDFAnnotation(env, jannot);
+
+	if (!ctx || !page) return;
+
+	fz_try(ctx)
+		pdf_delete_annot(ctx, page, annot);
+	fz_catch(ctx)
+		jni_rethrow_void(env, ctx);
+}
+
+JNIEXPORT jboolean JNICALL
+FUN(PDFPage_update)(JNIEnv *env, jobject self)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	jboolean changed = JNI_FALSE;
+
+	if (!ctx || !page) return JNI_FALSE;
+
+	fz_try(ctx)
+		changed = pdf_update_page(ctx, page);
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	return changed;
+}
+
+JNIEXPORT jboolean JNICALL
+FUN(PDFPage_applyRedactions)(JNIEnv *env, jobject self, jboolean blackBoxes, jint imageMethod, jint lineArt, jint text)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	jboolean redacted = JNI_FALSE;
+	pdf_redact_options opts = { blackBoxes, imageMethod, lineArt, text };
+
+	if (!ctx || !page) return JNI_FALSE;
+
+	fz_try(ctx)
+		redacted = pdf_redact_page(ctx, page->doc, page, &opts);
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	return redacted;
+}
+
+JNIEXPORT jobject JNICALL
+FUN(PDFPage_getAnnotations)(JNIEnv *env, jobject self)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	pdf_annot *annot = NULL;
+	pdf_annot *annots = NULL;
+	jobject jannots = NULL;
+	int count;
+	int i;
+
+	if (!ctx || !page) return NULL;
+
+	/* count the annotations */
+	fz_try(ctx)
+	{
+		annots = pdf_first_annot(ctx, page);
+
+		annot = annots;
+		for (count = 0; annot; count++)
+			annot = pdf_next_annot(ctx, annot);
+	}
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	/* no annotations, return NULL instead of empty array */
+	if (count == 0)
+		return NULL;
+
+	/* now run through actually creating the annotation objects */
+	jannots = (*env)->NewObjectArray(env, count, cls_PDFAnnotation, NULL);
+	if (!jannots || (*env)->ExceptionCheck(env)) jni_throw_null(env, "cannot wrap page annotations in object array");
+
+	annot = annots;
+	for (i = 0; annot && i < count; i++)
+	{
+		jobject jannot = to_PDFAnnotation_safe(ctx, env, annot);
+		if (!jannot) return NULL;
+
+		(*env)->SetObjectArrayElement(env, jannots, i, jannot);
+		if ((*env)->ExceptionCheck(env)) return NULL;
+
+		(*env)->DeleteLocalRef(env, jannot);
+
+		fz_try(ctx)
+			annot = pdf_next_annot(ctx, annot);
+		fz_catch(ctx)
+			jni_rethrow(env, ctx);
+	}
+
+	return jannots;
+}
+
+JNIEXPORT jobjectArray JNICALL
+FUN(PDFPage_getWidgets)(JNIEnv *env, jobject self)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	pdf_annot *widget = NULL;
+	pdf_annot *widgets = NULL;
+	jobjectArray jwidgets = NULL;
+	int count;
+	int i;
+
+	if (!ctx || !page) return NULL;
+
+	/* count the widgets */
+	fz_try(ctx)
+	{
+		widgets = pdf_first_widget(ctx, page);
+
+		widget = widgets;
+		for (count = 0; widget; count++)
+			widget = pdf_next_widget(ctx, widget);
+	}
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	/* no widgets, return NULL instead of empty array */
+	if (count == 0)
+		return NULL;
+
+	/* now run through actually creating the widget objects */
+	jwidgets = (*env)->NewObjectArray(env, count, cls_PDFWidget, NULL);
+	if (!jwidgets || (*env)->ExceptionCheck(env)) jni_throw_null(env, "cannot wrap page widgets in object array");
+
+	widget = widgets;
+	for (i = 0; widget && i < count; i++)
+	{
+		jobject jwidget = NULL;
+
+		if (widget)
+		{
+			jwidget = to_PDFWidget_safe(ctx, env, widget);
+			if (!jwidget) return NULL;
+		}
+
+		(*env)->SetObjectArrayElement(env, jwidgets, i, jwidget);
+		if ((*env)->ExceptionCheck(env)) return NULL;
+
+		(*env)->DeleteLocalRef(env, jwidget);
+
+		fz_try(ctx)
+			widget = pdf_next_widget(ctx, widget);
+		fz_catch(ctx)
+			jni_rethrow(env, ctx);
+	}
+
+	return jwidgets;
+}
+
+JNIEXPORT jobject JNICALL
+FUN(PDFPage_createSignature)(JNIEnv *env, jobject self)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	pdf_annot *widget = NULL;
+	char name[80];
+
+	if (!ctx || !page)
+		return NULL;
+
+	fz_try(ctx)
+	{
+		pdf_create_field_name(ctx, page->doc, "Signature", name, sizeof name);
+		widget = pdf_create_signature_widget(ctx, page, name);
+	}
+	fz_catch(ctx)
+	{
+		jni_rethrow(env, ctx);
+	}
+
+	return to_PDFWidget_safe_own(ctx, env, widget);
+}
+
+JNIEXPORT jobject JNICALL
+FUN(PDFPage_getTransform)(JNIEnv *env, jobject self)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	fz_matrix ctm;
+
+	if (!ctx || !page)
+		return NULL;
+
+	fz_try(ctx)
+		pdf_page_transform(ctx, page, NULL, &ctm);
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	return to_Matrix_safe(ctx, env, ctm);
+}
+
+JNIEXPORT jobject JNICALL
+FUN(PDFPage_getObject)(JNIEnv *env, jobject self)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+
+	if (!ctx || !page)
+		return NULL;
+
+	return to_PDFObject_safe_own(ctx, env, pdf_keep_obj(ctx, page->obj));
+}
+
+JNIEXPORT void JNICALL
+FUN(PDFPage_setPageBox)(JNIEnv *env, jobject self, jint box, jobject jrect)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	fz_rect rect = from_Rect(env, jrect);
+
+	if (!ctx || !page)
+		return;
+
+	fz_try(ctx)
+		pdf_set_page_box(ctx, page, box, rect);
+	fz_catch(ctx)
+		jni_rethrow_void(env, ctx);
+}
+
+JNIEXPORT jint JNICALL
+FUN(PDFPage_countAssociatedFiles)(JNIEnv *env, jobject self)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	int n;
+
+	fz_try(ctx)
+		n = pdf_count_page_associated_files(ctx, page);
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	return n;
+}
+
+JNIEXPORT jobject JNICALL
+FUN(PDFPage_associatedFile)(JNIEnv *env, jobject self, jint idx)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	pdf_obj *af;
+
+	fz_try(ctx)
+		af = pdf_page_associated_file(ctx, page, idx);
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	return to_PDFObject_safe_own(ctx, env, af);
+}
+
+JNIEXPORT void JNICALL
+FUN(PDFPage_process)(JNIEnv *env, jobject self, jobject jproc)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	pdf_processor *proc = make_pdf_processor(env, ctx, jproc);
+	pdf_obj *resources;
+	pdf_obj *contents;
+
+	if (!ctx || !page) return;
+	if (!proc) jni_throw_arg_void(env, "processor must not be null");
+
+	fz_try(ctx)
+	{
+		resources = pdf_page_resources(ctx, page);
+		contents = pdf_page_contents(ctx, page);
+		pdf_process_contents(ctx, proc, page->doc, resources, contents, NULL, NULL);
+		pdf_close_processor(ctx, proc);
+	}
+	fz_always(ctx)
+	{
+		pdf_drop_processor(ctx, proc);
+	}
+	fz_catch(ctx)
+		jni_rethrow_void(env, ctx);
+}
+
+JNIEXPORT jobject JNICALL
+FUN(PDFPage_toPixmap)(JNIEnv *env, jobject self, jobject jctm, jobject jcs, jboolean alpha, jboolean showExtra, jstring jusage, jint box)
+{
+	fz_context *ctx = get_context(env);
+	pdf_page *page = from_PDFPage(env, self);
+	fz_colorspace *cs = from_ColorSpace(env, jcs);
+	fz_matrix ctm = from_Matrix(env, jctm);
+	fz_pixmap *pixmap = NULL;
+	const char *usage = NULL;
+
+	if (!ctx || !page) return NULL;
+	if (jusage)
+	{
+		usage = (*env)->GetStringUTFChars(env, jusage, NULL);
+		if (!usage) return NULL;
+	}
+
+	fz_try(ctx)
+	{
+		if (showExtra)
+			pixmap = pdf_new_pixmap_from_page_with_usage(ctx, page, ctm, cs, alpha, usage, box);
+		else
+			pixmap = pdf_new_pixmap_from_page_contents_with_usage(ctx, page, ctm, cs, alpha, usage, box);
+	}
+	fz_always(ctx)
+		if (usage)
+			(*env)->ReleaseStringUTFChars(env, jusage, usage);
+	fz_catch(ctx)
+		jni_rethrow(env, ctx);
+
+	return to_Pixmap_safe_own(ctx, env, pixmap);
+}